No, not in the sense of providing responses to technical questions about the content of the software. But we WILL still provide a Product Activation Code to anyone who was actually a licensed owner of Version 5.
Yes, from the following links:
V5.8 Web Based Docs: http://www.enercalc.com/sel58_help/
V5.8 Docs Part I - PDF: http://www.enercalc.com/pdf/EC58_Part_I.pdf
V5.8 Docs Part II - PDF: http://www.enercalc.com/pdf/EC58_Part_II.pdf
V5.8 Docs Part III - PDF: http://www.enercalc.com/pdf/EC58_Part_III.pdf